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The conformer of threo-2,3,4-triphenylbutyric acid that gives the product A in the presence of anhydrous HF is
Question



The conformer of threo-2,3,4-triphenylbutyric acid that gives the product A in the presence of anhydrous HF is

A.

B.

C.

D.

Correct option is B

For the formation of the product A, COOH and benzyl (Bn) group must be in the same plane. Also, the two phenyl groups are anti to each other which can be seen from the Newman projection in image shown.

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